Fix circular dependency problem for tag helpers

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/AbpTagHelper.cs

@@ -1,4 +1,5 @@
-using System.Threading.Tasks;
+using System;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.Threading;
@@ -21,7 +22,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
         protected AbpTagHelper(TService service)
         {
             Service = service;
-            Service.TagHelper = (TTagHelper)this;
+            Service.As<AbpTagHelperService<TTagHelper>>().TagHelper = (TTagHelper)this;
         }
 
         public override void Init(TagHelperContext context)

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/AbpTagHelperService.cs

@@ -17,7 +17,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
     {
         protected const string FormGroupContents = "FormGroupContents";
 
-        public TTagHelper TagHelper { get; set; }
+        public TTagHelper TagHelper { get; internal set; }
 
         public virtual int Order { get; }
 

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpValidationAttributeTagHelperService.cs

@@ -1,12 +1,4 @@
-using System;
+using Microsoft.AspNetCore.Razor.TagHelpers;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text.Encodings.Web;
-using Localization.Resources.AbpUi;
-using Microsoft.AspNetCore.Mvc.TagHelpers;
-using Microsoft.AspNetCore.Mvc.ViewFeatures;
-using Microsoft.AspNetCore.Razor.TagHelpers;
-using Microsoft.Extensions.Localization;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 {

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/IAbpTagHelperService.cs

@@ -7,7 +7,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
     public interface IAbpTagHelperService<TTagHelper> : ITransientDependency
         where TTagHelper : TagHelper
     {
-        TTagHelper TagHelper { get; set; }
+        TTagHelper TagHelper { get; }
 
         int Order { get; }